7-2-9 COMMUNICATION CIRCUIT AND CONNECTION L/WIRE BETWEEN MAIN PCB AND DISPLAY PCB
The following circuit is a communiction cirtuit used for exchanging the necessary information between main MICOM of main
PCB and LCD dedicated MICOM for LCD control of display PCB.
Transmission/receipt L/Wire together with the necessary display PCB for driving the display PCB is required.
Poor communication occurs if a continuous information exchange fail to continue for more than 2 minutes between main
MICOM of main PCB and LCD dedicated MICOM for LCD control of display PCB.
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Main MICOM LCD dedicated MICOM
DC 12V
GND
Transmission (error status)
Reception (notch status)
Main PCB L/Wire FD/H(4-wire) Display PCB
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